[NSDictionary dictionaryWithObjectsAndKeys: [UIColor redColor], UITextAttributeTextColor, [UIFont fontWithName:@"Arial" size:0.0], UITextAttributeFont,            nil] forState:UIControlStateSelected];        [[UITabBarItem appearance] setTitleTextAttributes:          [NSDictionary dictionaryWithObjectsAndKeys: [UIColor blackColor], UITextAttributeTextColor, [UIFont fontWithName:@"Arial" size:0.0], UITextAttributeFont,            nil] forState:UIControlStateNormal];

self.tabBar.selectedImageTintColor = [UIColor yellowColor];self.tabBar.tintColor = [UIColor yellowColor];
self.tabBar.barTintColor = YWGlobalBG; //tabbar背景颜色